PLATE XXXIV. 



Fig. ... 1. Spondylus SULCATELLUS, -SCoi?., p. 4-18 ; view of the smaller valve north of 



PoodoopoUiam, Arrialoor groitj]. 



Fig. .. 2. Spondylus SUB-COSTULATUS, &0/., p. 449 ; Ootetoo/, Oo/a^or yro!/;?. 



Figs. 3—14 & 19. Plicatcjla instabilis, StoL, p. 445 ; specimens in different stages of growth 



and development of the radiating ribs, (comp. pi. 46, fig. 3) ; 3—7 and 12 

 are from near Arrialoor; 8, 9, 10, 11, 1,3, 19, from near Ootacood ; 12« 

 and 14 from Olapaudy ; Arrialoor group. 



Figs. 15, 16, 17 & 18. Plicatola multicostata, Forbes, p. 446; different specimens from near 



Anapaudy, Trichinopoly group. 



^'g- ••• 20. PlICATULA STEIATO-COSTATA, 5M, p. 444 ; 5/5«Y%00<;y, ^mafoor <7rOT/^. 



^ig- ■ • • 21- Flicatula sessilis, Stol., p. 446 ; on the anterior side of the valve the shell 



is near the beak partially broken off; Moraviaioor, Ootatoor group, (comp. 

 pi. xlvii, figs. 5 — 7). 



